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Alpha representative. NOTE: Alpha shall not be held liable for any damage or injury involving its enclosures, power supplies, generators, batteries or other hardware if used or operated in any manner or subject to any condition not consistent with its intended purpose or is installed or operated in an unapproved manner or improperly maintained.
Contents SAFETY NOTES ........................5 IMPORTANT SAFETY INSTRUCTIONS ................5 GENERAL SAFETY PRECAUTIONS..................6 Introduction ......................... 8 What This Manual Covers ..................8 Who Should Read This Manual .................. 8 How to Use This Manual ..................... 8 Product Overview..................... 8 Theory of Operation ..................
Review the drawings and illustrations contained in this manual before proceeding. If there are any questions regarding the safe installation or operation of this product, contact Alpha Industrial Power, Tel: 1-800-996-6104 Fax: 1-678-584-9259 or the nearest Alpha representative. Save this document for future reference.
GENERAL SAFETY PRECAUTIONS: This unit and its associated hardware must be serviced only by qualified, authorized personnel. Unit must remain locked at all times, except when authorized service personnel are present. Remove all conductive jewelry or personal equipment prior to servicing equipment, parts, connectors, wiring, or batteries. Read and follow all installation, equipment grounding, usage, and service instructions included in this manual. Use proper lifting techniques whenever handling enclosure, equipment, parts, or batteries. Batteries contain dangerous voltages, currents and corrosive material.
SAFETY GROUND The safety ground is a two-part system, comprised of the utility service and the ACS HP Series Battery Charging system. 1. Utility service As a minimum requirement for the protection of equipment, the local utility service must provide a low- impedance path for fault current return to Earth.
Who Should Read This Manual The Product Safety Information chapter and the Operation chapter are intended for anyone who will be operating the ACS HP Series Battery Charger. The Installation and Maintenance chapters are intended for qualified installers, trained electricians or technicians who are fully educated on the hazards of installing electrical equipment such as uninterruptible power supplies and their associated batteries and accessories.
Theory of operation Please refer to the power circuit block diagram on the following page for a theory of operation of the ACS HP switched mode AC-DC conversion system. The 187-312 VAC, 50/60 Hz input is fed through a circuit breaker into a full wave rectifier, which in turn provides a 120 Hz (340V peak) pulse train to an input filter circuit. The input filter provides a nominal 290 VDC "raw supply", with approximately 30 VP-P 120 Hz ripple, to the transistor switching circuit. The transistor switching circuit “chops” the raw supply into a 525VP-P, 100 kHz (nominal) rectangular waveform with a nominal 66% duty cycle. This high frequency switching waveform is then fed into a ferrite power transformer, in which the waveform is “stepped down” and isolated. A rectifier circuit then converts the power transformer output to a DC pulse train with a nominal 160 V peak.
System Components The ACS HP Series Battery Charger is comprised of a number of individual subsystems designed to work together to provide highly reliable, filtered power in support of the load. A typical system will contain the following: 1. Blank equipment panel. 2. Cordex 4.4kW rectifiers Loaded onto pre-installed shelf. The shelf contains up to five hot-swappable 4400W Rectifier modules. The Rectifiers are used as the charging component of a hybrid “UPS” system. 3. Cordex Controller CXCR: Controls the entire AC and DC power system.
Specifications Specifications Standard Features (continued) Electrical Control Functions Input: Automatic, scheduled, or manual float charging (adjustable) Automatic, scheduled, or manual equalize charging (adjustable) Voltage: High/Low voltage alarm setting (adjustable) Nominal: 208 to 250Vac Charge current limit (adjustable) Operating: 187 to 312Vac Automatic or manual battery testing Battery capacity and runtime prediction Extended:...
Installation Notes • The ACS HP Series Battery Charger is designed to be installed in a controlled environment, sheltered from rain, excessive dust and other contaminants. • The system arrives pre-wired, and the installer is responsible for connecting the utility input to the system, the battery strings, and the system to the load.
Recommended Installation Layout Verify input (supply) wiring has been run to site in accordance with applicable local and national electrical codes. The ACS Series system is heavy equipment. To prevent personal injury or equipment damage, use lifts and extreme care when handling. Ventilation and Cooling: The rectifier/charger is rated to better perform within 18°F (–10°C) and 122°F (+50°C) temperature range.
Electrical Connection and Wiring Always refer to the ACS system electrical schematic diagram for proper installation. Before connecting the ACS Series Battery Charger insure that: The battery is disconnected (if applicable) The circuit breakers are “OFF” The relays, fuses and circuit boards are installed The unit is wired in accordance with the instructions (refer to the wiring connections and electrical diagram) Wire size is very important. The nameplate provides the essential information regarding the input and...
Installing the Rectifier Modules Before installation, verify all upstream and downstream circuit breakers are in the OFF (open) position. NOTE: The Rectifier shelves are factory-installed and pre-wired. In the event a shelf requires removal or replacement, contact Alpha Industrial Power service at 1-800-996-6104. Fig. 2-2, Rectifier Module Rectifier Module Installation Procedure: 1. Load the first module in the leftmost position on the shelf. Populate the shelf from left to right. Do not force the module into place; all modules are keyed to ensure the correct module (voltage/polarity) type is used.
Placing the System into Service CAUTION! This procedure must be performed by a qualified service technician. WARNING! To meet North American safety standards, do not change the output voltage and frequency settings. NOTE: Perform each step and verify no alarm conditions exist upon completion of the step. If an alarm condition exists, determine the cause of the alarm and correct before proceeding to the next step.
Rectifier Operational Status The front panel LEDs provide: Rectifier Status Summary Rectifier software upgrade in-progress indication Locate Module Pattern Rectifier status summary will show the rectifier alarm status, communication fail status and rectifier on/off status. NOTE: For detailed installation, operation and fault diagnosis information, refer to the Cordex 125- 4.4kW Modular Switched Mode Rectifier technical manual (p/n 010-589-B2). Fig. 3-1, Rectifier LEDs AC ON The top LED (green) is on when AC is within valid range. The LED will flash (~2Hz) when AC is outside the normal range - AC voltage is invalid if the AC Mains Low or AC Mains High alarm is active. The LED turns off when AC has failed.
CXC Controller Operational Status The Charging system is shipped with the Cordex CXC Controller pre-installed. Detailed information regarding installation, operation and fault diagnosis can be found in the Cordex Controller technical manual (018-570-B2). Fig. 3-2, Cordex Controller Front panel 3.3.1 Startup and Reset Procedure When the CXC is powered-up or reset, it will first perform a 15-second self-test before displaying the Cordex logo and various identification messages. The three front-panel LED’s will illuminate temporarily, but will extinguish after the system has finished its self-test. Next, the GUI will display...
CXC Controller Opeational Status, continued 3.3.2 Normal Operation This is the default-operating mode or “home page.” The GUI displays system status information and monitors all input channels. Active areas to tap and activate are noted below: Analog Signals Display Mode Status Rectifiers Information Converter treport may also be accessed via this area...
Emergency Shutdown Procedure CAUTION! WARNING! In an emergency, Line power may be disconnected at the service entrance or main electrical panel to protect emergency personnel, but there can still be AC power present at the UPS output. You must always turn OFF the battery circuit breaker.
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